Did you get an error while installing the extensions?
What of how do they not work, more info would help
link to your site would help.

Each time there is this error message.

It seems that your server settings are limiting the file upload.
In your Joomla installation you can check how large it is. ( system | system information | php settings.) You have to increase Upload Max Filesize on your server

I did it but you can see on the picture above, it's still 64MB. How can I change this in joomla??

you can always upload the extensions to a folder on the server and choose Install from Folder. You have to do that with each zip file

Hello

Can you confirm that you are uploading the the module install file as these are less than 1MB. Note that you will need to unzip your download before installing the individual modules.

Ciaran

Hello
You can see the files in the document below. The icons module is about 1084KB. But I also can't download icons- / image hover gallery- and the thumbs gallery-modules.
Tank you.

download the template file from your template downloads. Extract the zip file. Go to the map joomla 4.x install files. Log into your joomla admin site. Choose sytem | install extension and Upload & Install Joomla Extension each mod_51*****.zip separately.

Dear FrancW
You can be sure that I tried this with several mod-51....zip files. It doesn't work....

Does your server have the minimum Requirements for Joomla! 5.x and have the directories/files the right permissions?

Hello

That does seem strange as your upload dialog states 64MB so uploading a 1MB extesion should not igve you any issues. May I suggest sending temporary administration access to your Joomla installation to info@joomla51.com and we will examine this issue further. For our reference please paste a link to this post in your email.

Ciaran

Thank you

Could you also provide a URL to your Joomla installation?

Ciarán

Hi. Unfortunately I don‘t know.. could you please help me as soon as possible? thank you

Hello

Unfortunately there is very little we can do without access to your site as the issue appears to be specific to your site.

Ciaran